If x varies directly as y, and X = 24 when y= 21, Find x when Y=6
1 answer:
Answer:
x = 48/7
Step-by-step explanation:
There's two good ways to do this problem.
Option 1:
Translate "x varies directly as y" into the equation y=kx
Then you have to find k. After you "reset" your y=kx equation, fill in k and then solve for x. See image.
Option 2:
Translate "varies directly" into a proportion, which is two fractions equal to each other:
x/y = x/y
Fill in the three numbers given and cross multiply and solve to find the fourth number. See image.
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Answer:
y = 7x + 16
Step-by-step explanation:
Slope (m) = 7
y - intercept (b) = 16..{from (0, 16)}
Equation of line in slope intercept form is given as: