1. y is directly proportion to x.
When x = 500, y =10
Find a formula for y in terms of x. would the formula be y=kx?
2. v = sqrt of a/b
a = 6.43 correct to 2 decimal places.
b = 5.514 correct to 3 decimal places.
by considering bounds, work out the value of v to a suitable degree of accuracy.
You must show all your workings and give a reason for your final answer. - no idea for this question lol
Please help me on these questions, I would greatly appreciate it :D cheers
When x = 500, y =10
Find a formula for y in terms of x. would the formula be y=kx?
2. v = sqrt of a/b
a = 6.43 correct to 2 decimal places.
b = 5.514 correct to 3 decimal places.
by considering bounds, work out the value of v to a suitable degree of accuracy.
You must show all your workings and give a reason for your final answer. - no idea for this question lol
Please help me on these questions, I would greatly appreciate it :D cheers
-
1. y=kx
u need to replace the y and x values to find k to make the equation
so it would be:
10=500k
10/500=k
k=0.02
and so the equation would be y=0.02x
2. just replace the a and b values
v=√a / √b
v=√6.43 / √5.514
v=1.079871565
and since it said "work out the value of v to a suitable degree of accuracy"
v=1.08 would be fine
u need to replace the y and x values to find k to make the equation
so it would be:
10=500k
10/500=k
k=0.02
and so the equation would be y=0.02x
2. just replace the a and b values
v=√a / √b
v=√6.43 / √5.514
v=1.079871565
and since it said "work out the value of v to a suitable degree of accuracy"
v=1.08 would be fine