Algebra 2 Module 1 Review

• (3, -8)

• (3, 8)

• (0, -8)

• (3, 0)

Answer explanation

b=-8 is the y-intercept (0, -8)

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

• (-5, 4)

• (5, -4)

• (-2, 5)

• (4, -5)

Answer explanation

In point-slope form, the known coordinate is the numbers added or subtracted from the x and y, but opposite of how they look

When graphing a line with a slope of -3, you should go

• left 3, up 1

• down 3, right 1

• down 3, left 1

• left 3, down 1

Answer explanation

Write the slope as -3/1. The top is the rise (or in this case a drop down) and the bottom is the run (positive meaning right).

• undefined

• -7

• 0

• none of these

Answer explanation

0 divided by any number is 0. Try it on your calculator!

Tags

CCSS.8.EE.B.5

• 5

• -5

• 9

• -9

Answer explanation

m=5 in this equation and parallel lines have the same slope.

Tags

CCSS.8.EE.B.6

• 7

• -7

Answer explanation

m = -7/1 and a perpendicular slope will be the opposite (+) reciprocal (1/7)

Tags

CCSS.8.EE.B.6

Find the slope between the points (6, 2) and (-4, 3)

• -10

• 2

Answer explanation

Make sure you subtract the y's on the top and the x's on the bottom for the slope formula.

Tags

CCSS.8.EE.B.5

Which of these gives the line with slope 4 and x-intercept 8?

• none of these

A good way to find the y-intercept of a line with slope 2 passing through (1, 4) would be to solve

• y = 2(1) + 4

• 4 = 2(1) + b

• 1 = 2(4) + b

• 4 - b = 1 - y

Answer explanation

By temporarily using (1, 4) as the x and y in

y = mx + b, we can solve for b.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write an equation for this line.

• none of these

Answer explanation

The y-intercept is -2. The line is sloping downward, going down one unit for every move right 4 units.