The value of x = 1
5x + 15 = 20
- 15 -15
5x = 5 ( Divide by 5)
There are 23 nickles in her purse
So,
The standard form is:
y = mx + b
First, we find "m," the slope. Subtract the y-coordinates from each other. Do likewise with the x-coordinates.
2 - -3 = 5
2 - 0 = 2
Slope = 5/2
Now, we can substitute the second solution into this equation for x and y and solve for "b."
Now we have our complete equation.