Question

Can some answer these math questions asap thanks

Answer 1

3.) 63=3x+7y

4.) Y-intercept is 9

Explanation:

(For 3) For every time a person gets a touchdown, x represents that

for every time a person person scored a successful extra-point attempt, y represents that.

And they team scores 63, so....

the equation would look like this

63=3x+7y

(For 4) You find the y-intercept by turning the standard form equatio into the slop intercept form

`(-3x)63=3x+7y (-3x)\\((1)/(7)) 7y=(-3x+63)((1)/(7) )\\y=-(3x)/(7) +9`

(Helper's note, multiplying by its reciprocal is the same as dividing it by a whole number, in the case dividing the number by 7 is the save as multiplying the number by
`(1)/(7)`)

Then plugging x=0 and solve for y, which in this case, y=9

`y=(-3(0))/(7) +9\\y=9`

(For the graphing) Turn 63=3x+7y into a slope intercept form, which is
`y=-(3x)/(7) +9` and graph from there