To find the value of y when x=72, we can set up a proportion using the given information. Since y varies directly with x, we can write the proportion as:
y1/x1 = y2/x2
where y1 = 252, x1 = 84, and x2 = 72.
Plugging in these values, we get:
252/84 = y2/72
To solve for y2, we can cross multiply:
84 * y2 = 252 * 72
Simplifying the right side:
84 * y2 = 18144
Dividing both sides by 84:
y2 = 216
Therefore, when x=72, y = 216.
Find the value of y for a given value of x, if y varies directly with x.
If y=252 when x=84, what is y when x=72?
1 answer
1 answer