Answer:
49.93
Step-by-step explanation:
it is 0.07 away from 50
Answer:
Answer is 90,000
Step-by-step explanation:
Hope this helps!
a.
Solution Given:
Slope of the line passing through the point is
m=
<u>slope=-2</u>
b.
Solution given:
equation is
2x-5y=-10
2x+10=5y
y=2x/5 +10/5
y=2/5 x +3
comparing above equation with y=mx+c
we get
m=2/5
<u>slope=2/5</u>
c.
Slope of the line passing through the point is
m=
-4=
-4=10/-x
doing criss cross multiplication
-4*-x=10
4x=10
x=10/4
x=5/2
<u>slope=5/2</u>
d.
we have
equation of line passing through the one point is
y-5=-7(x-(-1))
y=-7(x+1)+5
y=-7x-7+5
<u>y=-7x-2 is a required equation:</u>
Answer:
a) bijective
b) neither surjective or injective
c) injective
Step-by-step explanation:
Since we are looking from real numbers to real numbers, we want the following things
1) We want every real number y to get it. (surjective)
2) We want every y that gets hit to be hit only once. (injective).
---
If we have both things then the function is bijective.
a) f(x)=5x+4 this is a line with a positive slope.
That means it is increasing left to right. Every increasing or even decreasing line is going to hit every real number y. This is a bijection.
b) g(x)=2x^2-2 is a parabola. Parabola functions always have y's that get hit more than once and not all y's get hit because the parabola is either open up or down starting from the vertex. This function is neither injective or surjective.
c) h(x)=1+(2/x) x is not 0.
1+(2/x) is never 1 because 2/x is never 0 for any x. This means the real number y=1 will never be hit and is therefore not surjective. This function is injective because every 1 that is hit is only hit once. If you want use the horizontal line test to see this.