LESSON 5 – CONNECTING ENGLISH WITH MATH
TRANSLATING WORDS INTO EQUATIONS
Make a list of all the words you can use to represent each of the four symbols:
+
-
×
=
Example ① Write a mathematical expression or equation to describe the following:
a) The sum of two numbers is 25
___________________________
b) A third of a value then decreased by seven
___________________________
c) 12% of sales and $1000 are Vanessa’s earnings
___________________________
d) Twice a number increased by 3
___________________________
e) The square of the sum of a number and 4
___________________________
f) The sum of the square of a number and 4
___________________________
Example ② Mrs. Peleck is looking into Internet access for her home. IT PLUS charges a flat rate of
$25/month for unlimited use. Techies Inc. charges $10/month plus $1/h for use. If she expects
to use the Internet for approximately 18h/month, which plan is the better option?
a) Create an equation for the monthly cost with IT PLUS. (Remember to define your variables)
b) Create an equation for the monthly cost with Techies Inc.
c) Graphically, determine the point of intersection of the linear equations?
d) What is the meaning behind the point of intersection?
e) When is it better for Mrs. Peleck to choose Techies Plus?