If the point (-1,-5) lies on the graphs of 3x=ay+7 and y=bx+7, find the value of a and b.
Answers
Answered by
17
Given: (-1,-5) lies on the graph
therefore, x= -1 and y= -5
now,
3x= ay+7
3(-1)=a(-5)+7
→ -3= -5a +7
→ 5a= 7+3=10
→ a= 10/5=2//
Also,
-5=b(-1)+7
→ -5=-b+7
→ b= 7+5= 12//
______________
therefore, x= -1 and y= -5
now,
3x= ay+7
3(-1)=a(-5)+7
→ -3= -5a +7
→ 5a= 7+3=10
→ a= 10/5=2//
Also,
-5=b(-1)+7
→ -5=-b+7
→ b= 7+5= 12//
______________
Answered by
0
Answer:
a=2 and b=12
Step-by-step explanation:
Given :
(-1,-5) lies on the graph
Therefore , x = -1 and y = -5
Now ,
3x = ay+7
3(-1) = a(-5)+7
-3 = -5a+7
5a = 7+3
5a = 10
a = 10/5
a = 2
y = bx+7
(-5) = b(-1)+7
-5 = -b+7
b = 7+5
b = 12
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