can a system of two linear equations have only two or three solutions? why or why not?

a classmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

give two systems of equations that would be easier to solve by substitution than by elimination. then give two systems that would be easier to solve with elimination. finally, explain how you decide whether to use elimination or substitution to solve a system.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

it has changed from the width and the height.

step-by-step explanation:

answer: on kudzu, being female and being green are independent events.

step-by-step explanation: