Y = -4/5x + 8/5 (slope intercept form is y = mx + b)
Answer:

Step-by-step explanation:
"At most 4" means it can be 4 or less.
That is the same as "less than or equal to 4"
Let x = number of frogs the princess kissed.

Just divide the 2nd numbers by the $ numbers
Move a2 to the left side of the equation so you have c2-a2. then divide by 2 to get b by itself. you are left with c2-a2 all over 2. the 2s will cancel and you'll be left with c-a=b