Pls \ help quick im being timed

y = 5/2x + 20

suppose: the line is y = ax + b

have: when y = 20, x = 0 => b = 20 (1)

                    y = 30, x = 4 => 30 = 4a + b (2)

(1),(2) => b = 20

              4a + b = 30

=> a = 5/2

    b = 20

=> the line is y = 5/2x + 20

Step-by-step explanation:

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step-by-step explanation:

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.