Algebra 1 Midterm 12/10/2020 - Alexus Johnson | Laabri

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You are driving to visit a friend in another state who lives 700 miles away. You are driving 65 miles per hour and have already driven 375 miles. Write and solve an equation to find how much longer in hours you must drive to reach your destination.

700h − 375 = 65; h = 0.63

65h + 375 = 700; h = 5

65h + 375h = 700; h = 1.6

65h − 375h = 700; h = 16.5

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Jessica has $63.50 she wants to spend on CDs, which are on sale for $13.50 each. Use an equation to find out how many CDs she can afford to buy.

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Find the slope

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Write the equation of a line that goes through the points (1, 3) and (-1, -5).

y = 4x - 1

y = 4x - 11

y = x/4 - 1

y = x/4 - 11

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Write the equation of the line.

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A line with 0 slope looks like...

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Which equation does not have a y-intercept of (0, -4)?

x+y=-4

x+4y=16

3x-2y=8

6x-3y=12

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Which equation does not have a y-intercept of (0, -4)?

x+y=-4

x+4y=16

3x-2y=8

6x-3y=12

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What is standard form ?

y=mx+b

y2-y1/x2-x1

Ax+By=c

y-y1=m(x-x1)

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What is standard form ?

y=mx+b

y2-y1/x2-x1

Ax+By=c

y-y1=m(x-x1)

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Given the slope and y-intercept, write the equation of a line in slope-intercept form b=4 m = -½

y= 4x-1/2

y=-1/2x + 4

-1/2y=4

y=1/2x+4

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Given the slope and y-intercept, write the equation of a line in slope-intercept form b=4 m = -½

y= 4x-1/2

y=-1/2x + 4

-1/2y=4

y=1/2x+4

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Find the slope of the line through points (12, -18) and (11,12)

1/30

-30

30

6/1

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In the equation y=mx+b, what does the m represent?

y-intercept

point-slope

linear

slope

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Select the graph for y > -2x - 3

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Identify the inequality.

y > 2

y ≤ 1

x ≥ 2

y ≥ 1

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which equation best represents this graph?

y < 1/2x + 1

y < 1/2x + 2

y >1/2x + 2

y > -1/2x +2

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Is (0,0) a solution to the system?

solution

not a solution

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Which system of inequality is shown?

y > -4/5x - 1 y ≤ 2/3x + 3

y ≥ -4/5x - 1 y ≤ 2/3x + 3

y = -4/5x - 1 y ≥ 2/3x + 3

y < -4/5x - 1 y < 2/3x + 3

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Consider the inequality y<2x+3. Which is true?

The line would be solid with shading above.

The line would be dashed with shading above.

The line would be solid with shading below.

None of these.

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which point is a solution

(0, 6)

(-4, 3)

(1, 0)

(-3, 4)

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Which graphs represents the inequality

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Do I need to flip my sign? -3x ≥ 12

yes

no