Let y be a function of x such that 8x+7y=51 what is the rate of change of y with respect to x
2 answers:
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Answer:
x=84
Step-by-step explanation:
(cross multiply)
252=3x
(divide both sides by 3)
x=84
First plot the y-intercept.
The equation is in the form: y = mx + b where b is the y-intercept. So when x = 0, y = -5.
(0, -5)
Then choose any other x value to obtain the y value of that coordinate. For example, plug x = 2 in the equation.
y = -1/2x - 5
y = -1/2(2) - 5
y = -6
So a second point can be:
(2, -6)
Plotting these two points should make a linear graph as desired. I attached a picture of where the two points should be as reference.
The equation is in the form: y = mx + b where b is the y-intercept. So when x = 0, y = -5.
(0, -5)
Then choose any other x value to obtain the y value of that coordinate. For example, plug x = 2 in the equation.
y = -1/2x - 5
y = -1/2(2) - 5
y = -6
So a second point can be:
(2, -6)
Plotting these two points should make a linear graph as desired. I attached a picture of where the two points should be as reference.
