Which relation is a function? a. {(5, 3), (2, 8), (–5, –1), (4, 7), (2, 1)}
b. {(5, 3), (2, 8), (–5, –1), (4, 7), (5, 7)}
c. {(–5, 3), (2, 8), (–5, –1), (4, 7), (2, 2)}
d. {(5, 3), (2, 8), (–5, –1), (4, 7), (–2, 1)}

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.