Unit 8: Linear Equations

Identify the domain of the relation.

• {-2, 5}

• {-5, -8, -2,-1, 3}

• It does not have a domain.

Is the relation a function?

• Yes

• No

• You can't determine from this information.

Select ALL of the ordered pairs which are solutions to the following equation (there may be more than one).

y = -2x +14

• (0,0)

• (0,14)

• (-2,18)

• (2, 10)

Write the equation in function form (solve for y).

8x + 4y = 20

• y = 2x + 5

• y = -8x + 20

• y = -2x +5

• y = 32x + 80

Select the coordinates of the x AND y intercepts to the following equation.

3x + 8y = 24

• (0,3)

• (3,0)

• (0,8)

• (8,0)

Select the coordinates of the x AND y intercepts to the following equation.

y = -x - 20

• (0,-20)

• (-20, 0)

• (-20, -20)

• (0,0)

Find the slope of the line through the given points.

(-3, 0) and (-1, 6)

• -3

• 1/3

• 3

• -1/3

What is the slope of this line?

• $\frac{2}{3}$

• $-\frac{2}{3}$

• $\frac{3}{2}$

• $-\frac{3}{2}$

Find the slope of the line through the given points.

(1, 9) and (1, 10)

• Zero

• $\frac{10}{9}$

• Undefined

• $\pi$

What is the slope of the given equation?

y = -3x + 6

• 3

• 6

• $-\frac{1}{2}$

• -3