Cumulative Standards Review
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Substitute each ordered pair into the inequality and check whether it results in a true statement.
I
3x-y<20 There are four options, each with an ordered pair. We will find which one of these ordered pairs satisfies the inequality. To do so, we will substitute each point into the inequality and check whether it results in a true statement.
Option | Ordered Pair | Substitution | Statement |
---|---|---|---|
F | ( 7, 1) | 3( 7)- 1? <20 | 20≮ 20 * |
G | ( 5, - 6) | 3( 5)-( - 6)? <20 | 21≮ 20 * |
H | ( 8, 0) | 3( 8)- 0? <20 | 24≮ 20 * |
I | ( - 1, - 4) | 3( - 1)-( - 4)? <20 | 1<20 âś“ |
x= 7, y= 1
Multiply
Subtract term
x= 5, y= - 6
Multiply
a-(- b)=a+b
Add terms
x= 8, y= 0
Multiply
Subtract term
x= - 1, y= - 4
Multiply
a-(- b)=a+b
Add terms