Answer:
The correct answer would be A. 15/4.
Step-by-step explanation:
Slope is equal to the change in <em>y </em>over the change in x<em>, </em>or rise over run.
m = change in y/change in x
The change in x is equal to the difference in x-coordinates (also called run), and the change in y is equal to the difference in y-coordinates (also called rise).
m = y2 - y1/x2 - x1
Substitute in the values of x and y into the equation to find the slope.
m = 5 - (- 10)/- 1 - (- 5)
Simplify.
m = 15/4
Positive,
because 2*12 equals to 24, and 24 is positive!
Answer:
a = 15
Step-by-step explanation:
Plug in b = 3 into 5a-10b=45
5a-10(3) =45
5a - 30 = 45
5a = 75
a = 15
Answer is in the attachment below. Open it up in a new window to see it in full.