Green Bridge Learning Resource Nchekwa Maka Modulus Inequalities

Gbogbo ọrọ náà

A modulus inequality asks not for an exact distance from zero, but for a range of distances: which values lie within a certain reach, or beyond it. The answer is always an interval or a pair of intervals, and once you see the distance picture, deciding which is effortless.

In this lesson you will solve \(|x|c\), then extend to expressions like \(|ax+b|

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Modulus Inequalities. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

Solve |x - 3| < 2. A. x < 1 or x > 5 B. 1 < x < 5 C. -5 < x < -1 D. x < 5 Answer: B
The inequality |x| > c (c > 0) is equivalent to: A. -c < x < c B. x < -c or x > c C. x > c only D. x < c Answer: B
Solve |2x - 1| > 5. A. -2 < x < 3 B. x < -2 or x > 3 C. x > 3 only D. -3 < x < 2 Answer: B
Solve 3|x + 1| < 12. A. -5 < x < 3 B. x < -5 or x > 3 C. -4 < x < 4 D. -3 < x < 5 Answer: A
Which is a valid way to write the solution of |x| > 4? A. -4 > x > 4 B. x < -4 or x > 4 C. -4 < x < 4 D. x = 4 Answer: B