keke6361
03.07.2019 •
Mathematics
Can someone me with these maths questions? i totally don't get them. do the following coordinates lie on the following graphs? 1) y=2x+4 (7,20) 2) y=4x-14 (-1,-18) 3) y=5x-1 (0.5,2.5) 4) y=-2x+6 (0.8,5.4)
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Ответ:
1. 2(7) +4 = 18, does not = 20, does not lie on graph
2. 4(-1) -14 = -18, equals -18, does lie on the graph
3. 5(.5)-1 = 1.5, does not = 2.5, does not lie on the graph
4. -2(0.8)+6 = 4.4, does not = 5.4 does not lie on graph
5. 1/2(0.7) +2 = 2.35, does not = 1.6, does not lie on graph
Ответ:
B. $8.26
Step-by-step explanation:
13.59 - 1.89 = 11.70
20 - 11.70 = 8.30