15.) match the graph with its equation.

a.) 5x + 4y = –20

b.) –5x – 4y = –20

c.) –5x + 4y = –20

d.) –5x + 4y = 0

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr