11.k>-3(4r+3)/4r-5
12.k<(2x+2)/x+3
2.50 = .15x + .7
-.7 - .7
1.8 = .15x
12 = x
7 more dimes so 12 nickels and 19 dimes
Rise over run
1/9
...........
Answer:
(4 , -3)
Step-by-step explanation:
Put "y" by itself on one side to isolate it
3x - y = 15
3x = 15 + y
3x - 15 = y
Substitute "y" in the second equation for "3x - 15"
x + (3x - 15) = 1
4x - 15 = 1
4x = 16
x = 4
Then, plug 4 into x in any of the equations
4 + y = 1
y = -3
(4 , -3)
Write the equation in slope-intercept form.
-y + 1 = 0
-y = -1
y = 1
This function is a constant. Regardless of the x-value, y will always be equal to 1. This will be graphed as a horizontal line running through the y-intercept of (0, 1).