All categories

4 years ago

If f(x)=ax+b and f(2)=1 and f(-3)=11, what is the value of A?

Mathematics

1 answer:

allochka39001 [22]4 years ago

7 0

Answer:

a = -2

Step-by-step explanation:

f(x)=ax+b

f(2)=1

f(-3)=11

f(2) = 1 means 2a+b =1

f(-3)=11 means -3a + b = 11

Subtracting the two equations

-(-3a +b =11) becomes 3a -b = -11 so we can add

2a+b =1

3a - b = -11

----------------------

5a = -10

Divide by 5

5a/5 = -10/5

a=-2

You might be interested in

Solve the inequality and show your solution on a number line: −4x≥−1

kiruha [24]

*To solve an inequality, it's the same as solving an equation; isolate the variable to one side.

For this, all you need to do is divide both sides by -4. And since we are dividing by a negative, flip the inequality sign and your inequality is $x\leq\frac{1}{4}$

Now to graph this. Since x can be "equal to" 1/4 ( ≤ = less than or equal to), you will have a closed circle on 1/4. And since x can also be "less than" 1/4, the arrow will be going to the left of 1/4.

6 0

3 years ago

Read 2 more answers

The expanded form of x0 is what

Anestetic [448]

Answer:

Can't really expand x and 0, so I guess it would just be x * 0

Step-by-step explanation:

explained above :)

4 0

3 years ago

There are 40 batteries in 10 packs.

DaniilM [7]

:-):-):-):-):-)

Step-by-step explanation:

1) 40÷10

2) 40÷2

7 0

3 years ago

It would really help if someone could tell me the answers for those questions

vazorg [7]

1) 2.4

2) 6.4

3) 7.7

4) 9.9

5) 2.8

Hope it helps <3

Just basic simplification, make 1 of the variable alone on one side

5 0

3 years ago

alonzo brought 17 packs of cola to a party , and each pack had 8 cans. lisa brought 7 cans of juice. how many cans did they brin

yanalaym [24]

Answer:

143

Step-by-step explanation:

17 times 8 =136, 136 + 7 = 143

3 0

3 years ago