Please help me i dont understand

Mathematics

2 answers:

Alex17521 [72]2 years ago

3 0

Answer:

It is linear. It is linear because it is a strait line which means that it is a function. A not linear line would look like a noodle.

Mama L [17]2 years ago

3 0

It’s a linear because the line is straight and linear, when you take of the ar, it’s line. Nonlinear means not a line. The line would not be straight and the line will a curve. Like noodles. Noodles aren’t straight, but when you make it straight it’s a linear.

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If y varies directly as x, and y=8 when x=3, find y when x=15.

Crank

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!