Question

Determine which ordered pairs are solutions to the inequality, y < 2x - 8.
A (5, -10)
B (3, -6)
C (-4, 0)
D (10, 5)

Answer 1

@BunnyBree

Answer 2

@andrewhaze

Answer 3

A. (5, -10)
y < 2x - 8.
-10 < 2(5) - 8
-10 < 10 - 8
-10 < 2 <--- This is true.

B. (3, -6)
y < 2x - 8.
-6 < 2(3) - 8
-6 < 6 - 8
-6 < -2 <-- This is also true.

C. (-4, 0)
y < 2x - 8.
0 < 2(-4) - 8
0 < -8 - 8
0 < -16 <--- Not true.

D. (10, 5)
y < 2x - 8.
5 < 2(10) - 8
5 < 20 - 8
5 < 12 <--- This is true.

The only ordered pair that doesn't work is C. (-4,0)

Answer 4

thanks thanks thanks

Answer 5

i have 2 more questions can you help

Answer 6

Sure. :D

Answer 7

Determine the x-intercept and y-intercept of 3x - 6y = 12.
A (9, 0) and (0, -3)
B (4, 0) and (0, -2)
C (-4, 0) and (0, 4)

Answer 8

im not good at these

Answer 9

3x- 6y =12

The X-intercept occurs where Y=0, so:
3x- 6(0) =12
3x = 12
x = 4
So, the X intercept is (4,0).

The Y-intercept occurs where X=0. so:
3(0)-6y=12
-6y =12
y=-2
So the Y intercept is (0,-2)

Hence B is the answer.

Answer 10

OK thanks last question

Answer 11

Which inequality has the following graph?